move to new void docker image, clean up dockerfile

also updated docker readme

Dockerfile

@@ -1,17 +1,19 @@
-FROM voidlinux/voidlinux
+FROM ghcr.io/void-linux/void-linux:latest-mini-x86_64
+LABEL org.opencontainers.image.source https://github.com/miaowware/qrm2
 
 COPY . /app
 WORKDIR /app
 
-ENV PYTHON_BIN python3
+ARG REPOSITORY=https://repo-us.voidlinux.org/current
+ARG PKGS="cairo libjpeg-turbo python3 python3-pip"
+ARG UID 1000
+ARG GID 1000
 
 RUN \
-    echo "**** update packages ****" && \
-    xbps-install -Suy && \
+    echo "**** update system ****" && \
+    xbps-install -SuyM -R ${REPOSITORY} && \
     echo "**** install system packages ****" && \
-    export runtime_deps='cairo libjpeg-turbo' && \
-    export runtime_pkgs="${runtime_deps} python3-pip python3" && \
-    xbps-install -y $runtime_pkgs && \
+    xbps-install -yM -R ${REPOSITORY} ${PKGS} && \
     echo "**** install pip packages ****" && \
     pip3 install -U pip setuptools wheel && \
     pip3 install -r requirements.txt && \
@@ -21,10 +23,11 @@ RUN \
         /tmp/* \
         /var/cache/xbps/*
 
-ARG UID
-ENV UID=${UID:-1000}
-ARG GID
-ENV GID=${GID:-1000}
+ENV PYTHON_BIN python3
+ENV PYTHONUNBUFFERED 1
+ENV UID ${UID:-1000}
+ENV GID ${GID:-1000}
+
 USER $UID:$GID
 
 CMD ["/bin/sh", "run.sh", "--pass-errors", "--no-botenv"]

README-DOCKER.md

@@ -23,14 +23,11 @@ This is the easiest method for running the bot without any modifications.
     version: '3'
     services:
       qrm2:
-        image: "docker.pkg.github.com/miaowware/qrm2/qrm2:latest"
+        image: "ghcr.io/miaowware/qrm2:latest"
         restart: on-failure
         volumes:
           - "./data:/app/data:rw"
-        environment:
-          - PYTHONUNBUFFERED=1
     ```
-   *Note that Github's registry requires [a few extra steps](https://docs.github.com/en/packages/using-github-packages-with-your-projects-ecosystem/configuring-docker-for-use-with-github-packages) during the initial setup.*
 
 3. Create a subdirectory named `data`.
 
@@ -64,8 +61,6 @@ This is the easiest method to run the bot with modifications.
         restart: on-failure
         volumes:
           - "./data:/app/data:rw"
-        environment:
-          - PYTHONUNBUFFERED=1
     ```
 
 3. Create a subdirectory named `data`.
@@ -112,4 +107,4 @@ This methods is not very nice to use.
 
     Where `[image]` is either of:
     - `qrm2:local-latest` if you are building your own.
-    - `docker.pkg.github.com/miaowware/qrm2/qrm2:latest` if you want to use the prebuilt image.
+    - `ghcr.io/miaowware/qrm2:latest` if you want to use the prebuilt image.